Walker 250-24689 Oxygen Sensor

Walker OE Oxygen Sensor for Audi and Volkswagen

Walker Products OE oxygen sensor Part Number 250-24689 is a specific-fit, heated sensor built for downstream and upstream applications on select Audi and Volkswagen models. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor with specific fitment for the listed vehicle applications
• 4-wire design with 22-gauge wiring and 72.36 in. harness length
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Overall length: 75.91 in.
• Walker Products OE line replacement for emissions control service

Product Details

Walker Products OE 250-24689 is designed as an OE-style replacement oxygen sensor for vehicles that rely on accurate exhaust feedback to manage air-fuel ratio and emissions performance. This sensor line is built for the specified application and position, including downstream and upstream locations where listed. Compatible vehicle coverage includes 2000-2006 Audi A4, 2000-2005 Audi A4 Quattro, 2002-2004 Audi A6 and A6 Quattro, 2001-2006 Audi TT, 2000-2001 Audi TT and TT Quattro, 2002-2005 Audi Allroad Quattro, 2004-2009 Audi S4, 2005-2009 Audi A8 Quattro, 2001-2002 Volkswagen EuroVan, and 2010 Volkswagen Jetta. This part number, 250-24689, is also listed for specific bank and sensor positions such as B1S2, downstream left, downstream right, and upstream on the applications shown.

Walker Products OE focuses on application-specific engine management and oxygen/air-fuel sensors. The brand line is positioned as an OE replacement range, with parts matched to fitment position and ECU feedback requirements for the vehicle platform.

Common Issues This Sensor Can Address

• Check engine light or malfunction indicator light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel ratio control
• Higher exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the exact year, make, model, engine, and sensor position before ordering. For the listed Audi A4, A4 Quattro, A6, A6 Quattro, TT, TT Quattro, Allroad Quattro, S4, A8 Quattro, Volkswagen EuroVan, and Volkswagen Jetta applications, match the downstream or upstream location shown in the fitment data. Inspect the sensor wiring harness and connector for physical damage before installation, since damaged wiring can shorten sensor life and affect operation.

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are developed as original-equipment replacement parts and manufactured under ISO9001/TS 16949 quality systems. Since 1946, Walker Products has supplied engine management sensors and fuel system components for automotive applications.